2971638071 has 2 divisors, whose sum is σ = 2971638072. Its totient is φ = 2971638070.

The previous prime is 2971638041. The next prime is 2971638077. The reversal of 2971638071 is 1708361792.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2971638071 - 2²⁶ = 2904529207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2971638077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1485819035 + 1485819036.

It is an arithmetic number, because the mean of its divisors is an integer number (1485819036).

Almost surely, 2^2971638071 is an apocalyptic number.

2971638071 is a deficient number, since it is larger than the sum of its proper divisors (1).

2971638071 is an equidigital number, since it uses as much as digits as its factorization.

2971638071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 2971638071 is about 54512.7331088802. The cubic root of 2971638071 is about 1437.6901740685.

The spelling of 2971638071 in words is "two billion, nine hundred seventy-one million, six hundred thirty-eight thousand, seventy-one".